They transmit the encrypted data star student project to the channel
provider. If the bandwidth is enough, the channel provider transmits star student project the encrypted
data. Otherwise, the channel provider sends a “bandwidth- insufficiency” star student project message to the content owner, and then the content owner generates the star student project auxiliary
information according to the original and encrypted content and provides star student project it to
the channel provider
https://www.youtube.com/watch?v=MzV9qsw2sJc
https://www.youtube.com/watch?v=5CDTVXENHtc
https://www.youtube.com/watch?v=7BQbP00P_PU
https://www.youtube.com/watch?v=MzV9qsw2sJc
https://www.youtube.com/watch?v=5CDTVXENHtc
https://www.youtube.com/watch?v=7BQbP00P_PU